[Elecraft] K3/KPA500 question

[Joe K2UF]

I have my K3-KAT500-KPA500 working great.  The amp is off to the left side
and I can't see the display easily.  while working on building an auto
antenna switch  I noticed  that the band display on the amp does not synch
with the K3.  It seems to be random.  If I hit  one dit on the key  the amp
will synch the band with the K3.  I am not sure if this has been working
like this right along and just did not  notice.
 
Any ideas guys.
 
73 Joe K2UF